Infinitive

Infinitivo

El infinitivo expresa el significado del verbo de forma general, sin referencia a tiempo o persona.

Se forma con la partícula 'to' + verbo:

To run (correr)

To speak (hablar)

La forma negativa se construye con "not + to + verbo"

I prefer not to use it.

Prefiero no usarlo.

Como veremos posteriormente, podemos encontrar en inglés el uso de un infinitivo sin 'to'.

Además de la forma simple, el infinitivo tiene formas compuestas y pasivas:

Infinitivo simple Infinitivo perfecto Infinitivo pasivo Infinitivo pasivo perfecto
To love To have loved To be loving To have been loving
Amar Haber amado Estar amando Haber estado amando

Ejemplos

I need to go now.

Me tengo que ir (simple).

It's nice to have finished the lesson.

Está bien haber acabado la lección (perfecto).

I'm glad to be playing football with you.

Estoy feliz de estar jugando al fútbol contigo (pasivo).

I'd like to have been watching TV when she arrived..

Me gustaría haber estado viendo la tv cuando ella llegó (perfecto pasivo).

Ejercicios

Escribe la forma correcta del infinitivo para las siguientes oraciones.

1 It's time leave to the theatre.

It's time to leave to the theatre.

2 Tom admitted that he has worked hard to finish the project in time.

Tom admitted to have worked hard to finish the project in time.

3 Don't forget feed the dog.

Don't forget to feed the dog.

4 I'd like that I had been studying two hours this morning but I couldn't.

I'd like to have been studying / to have studied two hours this morning but I couldn't.

5 My father is happy visit his parents tomorrow.

My father is happy to visit/ to be visiting his parents tomorrow.

6 I'm sorry say that we have go now.

I'm sorry to say that we have to go now.

7 I need you help me, please.

I need you to help me.

8 She was supposed teach a course on Greek.

She was supposed to be teaching a course on Greek.

9 It appears do by a software command.

It appears to have been done by a software command.

10 I'd like play basketball more than football.

I'd like to play basketball more than football.